<!DOCTYPE html>
<html>

<head>
    <title></title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link href="../bootstrap-5.1.3-dist/css/bootstrap.css" rel="stylesheet">
    <script src="../bootstrap-5.1.3-dist/js/bootstrap.bundle.min.js"></script>
</head>

<body class="container">
    <h3 align="center">按钮旋转器</h3>
    <button class="btn btn-danger" type="button" disabled>
        <span class="spinner-border spinner-border-sm"></span>
    </button>
    <button class="btn btn-danger" type="button" disabled>
        <span class="spinner-border spinner-border-sm"></span>
        Loading...
    </button>
    <hr />
    <button class="btn btn-success" type="button" disabled>
        <span class="spinner-grow spinner-grow-sm"></span>
    </button>
    <button class="btn btn-success" type="button" disabled>
        <span class="spinner-grow spinner-grow-sm"></span>
        Loading...
    </button>

</body>

</html>